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    Copyright (C) 2006-2011 Serotonin Software Technologies Inc.
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<p>The <b>Purge now</b> functionality allows the easy purging of point values based on purge strategy. Values that are
    purged are permanently deleted and unrecoverable following this operation. Select the <b>Purge strategy</b> and press the
    <b>Purge now</b> button. Deletion is done asynchronously, so you may navigate away from this page or change other
    point properties, but by doing so you will not receive a purge completed confirmation. The <b>Period</b> allows
    purging on an age basis. The <b>Values Limit</b> leaves at most as meany values as specified in Values limit field.
    The <b>All Data</b> deletes all values.
</p>